:root{--blue:#4D8FF7;--deep:#253B73;--cyan:#54D2F3;--text:#222;--muted:#5B6A82;--soft:#8795AA;--line:rgba(77,143,247,.12);--shadow:0 16px 40px rgba(37,59,115,.10);--footer:#1B2F5B;--radius:24px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:var(--text);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.75}body.drawer-open{overflow:hidden}a{text-decoration:none;color:inherit}img{max-width:100%;height:auto;display:block;object-fit:contain}main{min-height:60vh}.container{width:min(1180px,calc(100% - 40px));margin:auto}.site-header{position:sticky;top:0;z-index:9999;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);box-shadow:0 8px 24px rgba(37,59,115,.08)}.header-inner{height:78px;width:min(1240px,calc(100% - 32px));margin:auto;display:flex;align-items:center;gap:24px}.brand-logo img{width:138px;max-height:48px}.desktop-header .brand-logo{flex:0 0 auto}.main-nav{display:flex;align-items:center;justify-content:center;gap:4px;flex:1;white-space:nowrap}.main-nav a{padding:10px 13px;border-radius:999px;color:var(--deep);font-weight:700;font-size:14px}.main-nav a:hover,.main-nav 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var(--line);box-shadow:var(--shadow);border-radius:var(--radius)}.mini-card{padding:20px}.mini-card strong{display:block;color:var(--deep);font-size:18px}.mini-card span{color:var(--muted);font-size:14px}.pill-wrap{padding:26px 0}.pill-scroller{display:flex;gap:12px;overflow-x:auto;padding:4px 2px 14px;scrollbar-width:thin}.pill{min-width:190px;padding:14px 16px;border:1px solid rgba(77,143,247,.14);border-radius:999px;background:rgba(255,255,255,.86);box-shadow:0 8px 24px rgba(37,59,115,.06)}.pill:hover{border-color:var(--cyan)}.pill b{color:var(--deep);display:block}.pill small{color:var(--muted)}.intro-strip{margin:8px auto 54px;padding:24px 28px;border-radius:22px;background:linear-gradient(135deg,#fff,#EEF9FF);border:1px solid var(--line);color:var(--muted)}.section{padding:68px 0}.section.alt{background:#F7FAFF}.section-head{max-width:760px;margin-bottom:30px}.section-title,h1,h2,h3{color:var(--deep)}.section-title{font-size:clamp(28px,4vw,42px);margin:8px 0 12px}.section-head p{color:var(--muted)}.info-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.info-card{padding:24px}.info-card .num{font-size:13px}.info-card h3{margin:8px 0}.info-card p{margin:0;color:var(--muted)}.feature-stack{display:grid;gap:34px}.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:center;padding:34px;border:1px solid var(--line);border-radius:30px;background:#fff;box-shadow:var(--shadow)}.feature-row.reverse .feature-media{order:2}.feature-media{background:linear-gradient(145deg,#F7FAFF,#EEF9FF);border-radius:24px;padding:22px}.feature-media img{width:100%;max-height:320px}.feature-copy h2{font-size:32px;margin:0 0 12px}.feature-copy p{color:var(--muted)}.feature-points{display:grid;gap:8px;margin:18px 0}.feature-points span:before{content:"✓";color:var(--cyan);font-weight:900;margin-right:8px}.text-link{color:var(--blue);font-weight:800}.zone-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.zone-card{padding:18px}.zone-card img{width:100%;height:170px}.zone-card h3{margin:14px 0 8px}.zone-card p{color:var(--muted);font-size:14px}.app-banner{display:grid;grid-template-columns:.8fr 1.2fr;gap:42px;align-items:center;padding:36px;border:1px solid var(--line);border-radius:30px;background:linear-gradient(135deg,#fff,#EEF4FF,#EEF9FF);box-shadow:var(--shadow)}.app-banner img{max-height:320px;margin:auto}.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:20px 0}.check-grid span{padding:12px 14px;background:#fff;border:1px solid var(--line);border-radius:14px;color:var(--deep);font-weight:700}.security-grid{display:grid;grid-template-columns:1fr 1.35fr;gap:34px;align-items:start}.security-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.security-card{padding:20px;background:#fff;border:1px solid var(--line);border-radius:20px}.security-card p{color:var(--muted);margin:8px 0 0}.faq-list{display:grid;gap:14px}.faq-item{padding:22px 24px;border:1px solid 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var(--line);border-radius:24px;position:sticky;top:104px}.side-card a{display:block;padding:10px 0;color:var(--blue);border-bottom:1px solid var(--line)}.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.review{padding:20px;border-radius:18px;background:#F7FAFF;color:var(--muted)}.notice{padding:24px;border-left:4px solid var(--cyan);background:#EEF9FF;border-radius:16px;color:var(--muted)}.site-footer{background:#1B2F5B;color:#EEF6FF;margin-top:70px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px;padding:54px 0}.footer-brand img{width:150px;filter:brightness(0) invert(1);margin-bottom:18px}.site-footer h3{color:#fff;margin-top:0}.site-footer a{display:block;color:#dbe9ff;margin:8px 0}.site-footer p{color:#c8d8ef}.footer-bottom{text-align:center;border-top:1px solid rgba(255,255,255,.12);padding:18px;color:#c8d8ef}.drawer-overlay,.mobile-drawer{display:none}
@media(max-width:980px){.desktop-header{display:none}.mobile-header{display:flex;justify-content:space-between}.mobile-header .brand-logo{position:absolute;left:50%;transform:translateX(-50%)}.mobile-header .brand-logo img{width:120px}.main-btn.compact{padding:9px 15px;font-size:13px}.menu-toggle{width:42px;height:42px;border:0;background:#F7FAFF;border-radius:12px;display:grid;place-content:center;gap:5px}.menu-toggle span{width:21px;height:2px;background:var(--deep);display:block}.drawer-overlay{display:block;position:fixed;inset:0;background:rgba(10,20,40,.46);opacity:0;visibility:hidden;transition:.25s;z-index:10000}.drawer-overlay.show{opacity:1;visibility:visible}.mobile-drawer{display:block;position:fixed;left:0;top:0;bottom:0;width:84%;max-width:320px;background:#fff;z-index:10001;transform:translateX(-102%);transition:.28s;box-shadow:20px 0 50px rgba(0,0,0,.12);overflow:auto}.mobile-drawer.open{transform:none}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px;border-bottom:1px solid var(--line)}.drawer-head img{width:132px}.drawer-close{border:0;background:#EEF4FF;color:var(--deep);font-size:28px;width:40px;height:40px;border-radius:12px}.mobile-drawer nav{padding:12px 18px}.mobile-drawer nav a{display:block;padding:13px 14px;border-radius:12px;color:var(--deep);font-weight:700}.mobile-drawer nav a.active{background:#EEF4FF;color:var(--blue)}.drawer-note{margin:10px 18px 24px;padding:16px;background:#F7FAFF;border-radius:14px;color:var(--muted);font-size:13px}.hero-grid,.page-hero-grid,.feature-row,.app-banner,.security-grid,.content-layout{grid-template-columns:1fr}.feature-row.reverse .feature-media{order:0}.service-mini{grid-template-columns:1fr}.info-grid{grid-template-columns:repeat(2,1fr)}.zone-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}.side-card{position:static}.review-grid{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.container{width:min(100% - 24px,1180px)}.header-inner{width:calc(100% - 20px);height:68px}.hero-section{padding-top:42px}.hero-copy h1{font-size:38px}.hero-grid{gap:28px}.hero-visual{padding:16px}.section{padding:48px 0}.feature-row{padding:20px;gap:22px}.feature-copy h2{font-size:27px}.info-grid,.zone-grid,.security-cards,.check-grid,.review-grid,.footer-grid{grid-template-columns:1fr}.zone-card img{height:150px}.article-card{padding:22px}.page-hero{padding:42px 0}.app-banner{padding:22px}.service-mini{gap:12px}}